[cactusface]

When you take a roommate, aren't you sharing the cost of rent? Sharing can mean mutual contribution as much as it means mutual partaking. Also, what? Amazon is not a retailer? They have giant warehouses, they ship physical product with Amazon logos on the boxes, and they accept returns. They allow for 3rd party vendors, but they are still very much their own retailer. eBay perhaps, but not Amazon.

[michaelt]

You could say that if you buy a washing machine or a pack of tampons or a computer chip you and other buyers are "sharing" the cost of the production line, designers, marketing and distribution.

Personally, I wouldn't call it sharing even though it meets some dictionary definitions.

[smil]

renting out isn't sharing.

[cactusface]

It is if you live there. You share space and cost.